During the DB2 migration today, from V8.1 to V9.7, we plan to force application and make an offline backup because of version differences and the library is a development Test Library, when you use db2 force applications all in the source database and there is always a new connection, you decide to restart the database and disable database connection by setting db2set DB2COMM = tcpip to null. Use the following command to stop a database: db2 force application all; \ db2 force application all; \ db2 force application all; \ db2 force application all; \ db2 force application all; \ db2 force application all; \ db2stop: When the database is re-opened, the following error message is returned: 12/03/2013 11:05:54 0 SQL1042N An unexpected system error occurred. SQL1032N No start database manager command was issued. SQLSTAT = 57019
It can be seen that SQL1042N is an important information, and there is a lot of information in db2diag. log (the company's database is on the Intranet and cannot be developed );
According to the error code, google's SQL1042N is as follows: sql1_2c
An unexpected system error occurred.
Description
A system error occurred. Possible causes of this error are: